Annealing-leer.



Patented Jan. 30, 1917.

2 SHEETS-SHEET 1- 1. PLANTE. ANNEALING LEER. APPLICATION FILED MAY I5. 1913..

J. PLANTE.

ANNEALING LEER. APPLI CATION FILED MAY I5. 1913.

2 SHEETS-SHEET 2- drawings onto.

JOSEPH PLANTE, OF VERDUN, QUEBEC, CANADA.

ANNEALINGr-LEER.

Specification of Iietters Patent.

Patented J an. 3%, 191?.

Application filed May 15, 1913. Serial No. 767,862.

To all whom it may concern:

Be it known that L'Josnri-r PLAN'rn, of the town of Verdun, Province of Quebec, Canada, have invented certain new and useful Improvements in Annealing-Leers; and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to the furnaces in which glass bottles and other articles of glassware are annealed after coming from the forming machine and which are com- -monly known as annealing leers.

The invention has for an object to provide an improved means for heating-the lower portion of the annealing oven and the pan contained therein. For further comprehension however of the invention, and of the objects and advantages be had to the following description with appended claims and to the accompanying forming part of this specification in which similar reference characters indicate the same'parts and wherein- Figure 1 is a transverse vertical section of an annealing leer having my invention aplied thereto, the view being taken on the ine 1-1 Fig. 2. Fig. 2 is a horizontal section thereof taken on the line v2-2 Fig. 1. Fig. 3 is a central longitudinal section. Fig. 4 is a perspective view of one of the injector boxes.

The invention may be applied to an annealing leer of ordinary construction having an annealing oven 1 through which travels the usual pan'2 consisting of an endless traveling apron looped over front and rear sprocket wheels one of the forward ones of which is-shown at 3 mounted upon a shaft 4 supported in suitable bearings 5, the apron being driven byany well known or suitable means not necessary here-to be shown. The

articles to be annealed are placed on this pan and heated at the front end of the oven and allowed to cool gradually as they travel toward the rear of the latter as is well known, the forward end only of the furnace being shown as the invention is applied onlyto such forward end where the heating is done.

The usual burners are shown at 5 and, as will be apparent, these burners do not heat the lower portion of the oven as efficiently as the upper part and the pan remains comparatively cool and the bottoms of the bottles or other articles which rest thereon are in the side walls of the oven near the thereof, reference willv not properly heated and the articles develop in consequence lines of weakness.

According to my invention I provide means for causing a downward flow of the hot air adjacent the roof of the oven to the bottom of the latter and to this end I provide a series of injecting devices adapted to draw the hot air from the upper part of the oven and discharge it again into the latter adjacent the bottom thereof.

As here shown a plurality of elongated boxes 6, which I term injector boxes, are set front end thereof with their inner faces flush with the inner faces of such walls, these boxes being of a length to reach from a point adj acent the roof of the oven to a point below the pan. These boxes are provided on their inner faces with intake openings 7 and discharge openings 8 located respectively at the upper and lower ends thereof, the openings 8 communicating with the space under the pan.

Upon the interior of the top of eachbox a boss 10 is cast, such boss having an angular passage therethrough into one end of which a branch 12 from a pipe 13 leads while a nozzle 14 is screwed into the other end of the passage which opens into the box. The pipe 13 (of which there is one on either side of the box) is connected by the branched pipe 15 to any suitable source of steam or hot air and the discharge of such air or steam from the nozzle 14 causes the heated air to be drawn from the top of the oven 1 through the openings 7 and injected through the openings 8 into the space below the pan, thus heating the pan and the lower part of the oven to a temperature substantially uniform with that of the upper part of the oven.

What I claim is as follows:

1. In an annealing leer, an annealing oven constituting a space for the reception of articles, a heating device therefor, and an injecting device having its intake and discharge openings in communication respectively with the upper and lower portions of the oven space for the purpose set forth.

2. In an annealing leer, an annealing oven, a heating device therefor, and an injecting device having its intake and discharge openings in communication respectively with the upper and lower portions of the said oven, such injecting device comprising a box lo- 1 forth.

3. In an annealingleer, an annealing oven constituting a space for the reception of articles, a pan within the oven space and an inj ect-ing device having one end in communication with and adapted to draw air from the upper portion of the oven space and the other end in communication with and ada ted to inject such air into the ,lower ortion of the oven space and at a point be ow the level of the said pan.

4. In an annealing leer, an annealing oven, a pan, an injector box located in the furnace Wall and communicating at the top with and adapted to receive air from the top of the oven and communicating at the bottom with and adapted to return the air to the oven at the bottom, a nozzle within and having its inlet near the top of such box; and a pipe leading from a suitable source of fluid supply and communicating with such inlet.

5. In an annealing leer, an annealing oven constituting a space for the reception of articles, a heating device therefor, a movable pan within the oven, an elon ated box in the wall of the oven, extending 'om a point adjacent the roof of the oven to a pomt below said pan and having an intake opening at the upper end and a discharge opening at the lower end, a boss upon the interior of the top of the box and having an angular passage therethrough one endof which opens into the box, a nozzle within the box and leading. from the end of the passage opening into the box and a fluid conveying pipe leadin to the other end of the passage.

n testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

. JOSEPH PLANTE.

Witnesses:

Auzx. Cmmm, -HAROLD J. INNns. 

